(AP) -- Authorities killed rats and fleas on Tuesday as they disinfected a town sealed off after three people died of pneumonic plague in a remote farming town in northwestern China, according to the provincial health department.

An alien plant species has invaded Missouri and is threatening to overrun crops and livestock pastures. To combat the scourge weed, officials are deliberately releasing two alien insect species to destroy its roots and seeds. ...

Restraining the use of some patients' unaffected upper limb during the subacute phase following stroke does not appear to generate greater improvements in motor impairment and capacity than standard rehabilitation alone, ...